I'll be listening to a theme or genre of music and it adds songs that don't really work outside the context of their album.

Spotify allows both: listening to random songs (either based on a particular genre, seeded from an existing playlist, or generated from the user’s listening habits), or choosing specific songs or albums to listen to.

They probably meant listening in random mode, and Spotify randomly choosing a track that doesn’t make much sense outside the context of its album.

Only if you listen on shuffle(like every music app I guess) or in their AI lists. Would be nice if the AI ones would respect that for sure, was wondering why that's not a thing since like 2016.